Serving all of the USA, Canada, Australia and the Middle East, MIFAB can provide you with the quality,
engineered plumbing and drainage solutions you need. Innovative product designs save the installer time and
material cost and provides the owner with higher quality cast stainless steel drains and cleanouts for the
same cost as the industry standard nickel bronze. Contact us today to learn more.

Purpose: Ball check valves contain a ball that sits freely above the seat, which has only one through hole. When the pressure above the seat exceeds that above the ball, liquid is allowed to flow through the valve. But once the pressure above the ball exceeds the pressure below the seat, the ball returns to rest in the seat, forming a seal that prevents backflow.

Design: Check valves are mechanical valves that permit gases and liquids to flow in only one direction, preventing process flow from reversing. They are classified as one-way directional valves. Fluid flow in the desired direction opens the valve, while backflow forces the valve closed. The mechanics of check valve operation are not complicated.